SAE AS452A
SAE AS452A 1965-OCT-01 Oxygen Mask Assembly Demand and Pressure Breathng Crew-Reaffrmed Noncurrent October 2003
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This standard covers both general type and quick-donning type mask assemblies in the following classes:
a. Class A, oronasal, demand
b. Class B, oronasal, pressure-demand
c. Class C, full face, demand
d. Class D, full face, pressure-demand